<html>
  <body>
    <form action="/changes" method="post">
    	<table>
    		<tbody>
    			<tr>
    				<td><label for="uc_id">UC: </label></td>
    				<td><input type="text" name="uc_id" value="uc.view_document" /></td>
    			</tr>
    		</tbody>
    	</table>
    	
    	<label for="data">JSON-encoded data</label><br/>
    	<textarea rows="4" cols="40" name="data"></textarea>
    	<br/>
    	<input type="submit" value="Send"/>
    </form>
  </body>
</html>